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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/chrome_browser_field_trials_mobile.h"
#include <string>
#include "base/command_line.h"
#include "base/metrics/field_trial.h"
#include "base/prefs/pref_service.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/chrome_version_info.h"
#if defined(OS_ANDROID)
#include "chrome/browser/prerender/prerender_field_trial.h"
namespace chrome {
namespace {
// Base function used by all data reduction proxy field trials. A trial is
// only conducted for installs that are in the "Enabled" group. They are always
// enabled on DEV and BETA channels, and for STABLE, a percentage will be
// controlled from the server. Until the percentage is learned from the server,
// a client-side configuration is used.
void DataCompressionProxyBaseFieldTrial(
const char* trial_name,
const base::FieldTrial::Probability enabled_group_probability,
const base::FieldTrial::Probability total_probability) {
const char kEnabled[] = "Enabled";
const char kDisabled[] = "Disabled";
// Find out if this is a stable channel.
const bool kIsStableChannel =
chrome::VersionInfo::GetChannel() == chrome::VersionInfo::CHANNEL_STABLE;
// Experiment enabled until Jan 1, 2015. By default, disabled.
scoped_refptr<base::FieldTrial> trial(
kDisabled, 2015, 1, 1, base::FieldTrial::ONE_TIME_RANDOMIZED, NULL));
// Non-stable channels will run with probability 1.
const int kEnabledGroup = trial->AppendGroup(
kIsStableChannel ? enabled_group_probability : total_probability);
const int v = trial->group();
VLOG(1) << trial_name << " enabled group id: " << kEnabledGroup
<< ". Selected group id: " << v;
void DataCompressionProxyFieldTrials() {
// Governs the rollout of the compression proxy for Chrome on mobile
// platforms. In all channels, the percentage will be controlled from the
// server, and is configured to be 100% = 1000 / 1000 until overridden by the
// server.
"DataCompressionProxyRollout", 1000, 1000);
// Governs the rollout of the _promo_ for the compression proxy
// independently from the rollout of compression proxy. The enabled
// percentage is configured to be 10% = 100 / 1000 until overridden by the
// server. When this trial is "Enabled," users get a promo, whereas
// otherwise, compression is available without a promo.
"DataCompressionProxyPromoVisibility", 100, 1000);
} // namespace
void SetupMobileFieldTrials(const CommandLine& parsed_command_line) {
#if defined(OS_ANDROID)
} // namespace chrome